N.C. Gen. Stat. § 31-5.2: Revocation of nuncupative will.

A nuncupative will or any part thereof may be revoked

(1) By a subsequent nuncupative will, or

(2) By a subsequent written will or codicil or other revocatory writing executed in the manner provided herein for the execution of written wills. (1953, c. 1098, s. 4.)